1. Agenda: Take out your notebook.
AP Biology Ms. Bell Room /1/14
Unit: AP Bio Exam Review
Aim:
(**Essential Knowledge 2.B- 2.E)
Do Now:
Agenda: Take out your notebook.
Do Now/Announcement-5min
Review Big Idea#2 (PPT/Video) 85min.
5/5- 5/16 Library (5&6, 8&9, and after school)
5/12 AP Bio 7:30 am –Exam will start at 8
5&6- Room 6024
8&9- Room 6032
Must bring No#2 Pencils
Looking Ahead
Mon-Thur 10th pd.
5/3,& 5/10 10am-1pm Study for AP Bio Exam
5/12 8am AP Exam
Assignments
AP Bio study log (8hrs –mandatory)
CCSS.ELA-Literacy.RST  Synthesize information from a range of sources (e.g., texts, experiments, simulations) into a coherent understanding of a process, phenomenon, or concept, resolving conflicting information when possible. 1

2. 2.A.3 Environmental Exchanges
Organisms must exchange matter with the environment to grow, reproduce and maintain organization.

3. Molecules and atoms from the environment are necessary to build new molecules.

4. Carbon is used in organisms to build carbohydrates, proteins, lipids and nucleic acids. Carbon is used in storage compounds and cell formation in all organisms.

5. The Carbon Cycle

6. Nitrogen moves from the environment to organisms where it is used in building proteins and nucleic acids.

7. Nitrogen Cycle

8. Phosphorus moves from the environment to organisms where it is used in nucleic acids and certain lipids.

9. The Phosphorus Cycle

10. Attraction between the partial negative charges on one water molecule to the partial positive charges on another water molecule results in hydrogen bonding.
Hydrogen bond

11. In cohesion, water has a tendency to cling to other water molecules
In cohesion, water has a tendency to cling to other water molecules. Cohesion is due to hydrogen bonding.
Surface tension is how difficult it is to break the surface of a liquid. Due to cohesion.

12. In adhesion, water has a tendency to cling to other substances
In adhesion, water has a tendency to cling to other substances. Adhesion is also due to hydrogen bonding.

13. This property of water stabilizes temperatures of oceans, and is why coastal areas have moderate climates.

14. Evaporative cooling: when water evaporates, it cools the area around it. The molecules of water left behind will have a lower average kinetic energy, and their temperature decreases.

15. Water is a good conductor of heat.

16. Ice is less dense than water due to hydrogen bonds forming a crystal
Ice is less dense than water due to hydrogen bonds forming a crystal. Most other solids are more dense than their liquids. The fact that ice floats means that lakes don’t freeze solid in winter.

17. Surface area-to-volume ratios affect a biological system’s ability to obtain necessary resources or eliminate waste products.

18. Example: Root hairs increase surface area for absorption of water and minerals.

19. Example: A typical pair of human lungs contain about 700 million alveoli, producing 70m² of surface area.

20. Example: Cells of the villi in the small intestine increase surface area for absorption of nutrients.

21. Example: Microvilli are extensions of the plasma membrane on certain cells that increase surface area for absorption.

22. Surface Area to Volume Ratio Calculation:

23. Video:
Environmental Matter Change

24. Learning Objectives
LO 2.6 The student is able to use calculated surface area-to-volume ratios to predict which cell(s) might eliminate wastes or procure nutrients faster by diffusion. [See SP 2.2]
LO 2.7 Students will be able to explain how cell size and shape affect the overall rate of nutrient intake and the rate of waste elimination. [See SP 6.2]
LO 2.8 The student is able to justify the selection of data regarding the types of molecules that an animal, plant or bacterium will take up as necessary building blocks and excrete as waste products. [See SP 4.1]
LO 2.9 The student is able to represent graphically or model quantitatively the exchange of molecules between an organism and its environment, and the subsequent use of these molecules to build new molecules that facilitate dynamic homeostasis, growth and reproduction. [See SP 1.1, 1.4]